摘要
为掌握四轴车辆操纵稳定性的基本特性,基于动量定理和动量矩定理,建立了三自由度操纵稳定性模型,该模型考虑了车身侧倾对车辆操纵稳定性的影响,较二自由度模型能够更真实地反映实际的四轴车辆运动情况。通过对所建立的四轴车辆操纵稳定性模型进行前轮转角阶跃输入响应进行仿真,分析了质心高度、质心前后位置、悬架等效侧倾角刚度、车身质量等车辆参数的变化对车辆操纵稳定性的影响,为车辆优化设计提供理论基础。
In order to master the basic characteristics of handling and stability of the four-axle vehicle,based on the momentum theorem and angular momentum theorem,a 3DOF model of the four-axle vehicle is built,in which the influence of body roll on vehicle handling and stability is considered. Compared with 2DOF model,the 3DOF model can reflect the motion of four-axle vehicle more actually. By the response simulation of the proposed model under the front-wheel steering-angle step input,the influence of the change of vehicle parameters on vehicle handling and stability is analyzed,such as height and position of center of mass,roll stiffness,body mass. Then the vehicle design optimization can be finished based on the analysis results.
出处
《机械科学与技术》
CSCD
北大核心
2016年第8期1253-1258,共6页
Mechanical Science and Technology for Aerospace Engineering
关键词
操纵稳定性
四轴车辆
侧倾
仿真
handling and stability
four-axle vehicle
body roll
simulation
momentum theorem
angular momentum theorem
step input
center of mass
roll stiffness
optimization
